The State Department is one of five Cabinet offices that have yet to fully comply with requests under the Freedom of Information Act to disclose the details and expenses of official travel more than a year after they were filed.

“These are exactly the kinds of records Cabinet offices should have at their fingertips,” said Thomas Blanton, director of the National Security Archive, a Washington-based open-information advocacy group. “You should not even have to ask for these records. They should be online already.”

The Justice Department, which is responsible for monitoring compliance with the open-government law, took more than one year to comply even though Attorney General Eric Holder has called swift responses to public records petitions an “essential component” of government transparency. Following repeated queries, the agency provided travel vouchers and then the costs of the trips last week. . . .